Ishnu’alah Senya and welcome to Wyrmrest Accord 
Walk up roleplay is popular here in a number of places, but you will find it most often in Orgrimmar or Stormwind. Not only that, but many guilds host open events which community members can tag along to, provided themes and guild rules are respected.
Pandaren roleplay is also abundant here and there are a number of Pandaren themed guilds and events here, on both Horde and Alliance. There are also a few neutral Pandaria-themed guilds with a focus on Pandaren-themed RP.
To name a few:
- [A] Jadepaw Dynasty
- [A] The Pandaren Empire
- [H] Steelpaw Shaodin
- [H] Yingsu Village
*Addendum
There is also a Pandaren Discord server to get in touch with some Pandaren roleplayers here on WRA.